@BrechtSchamp A correction on the thread !! Meraki MS425 supports both physical and flexible stacking. Physical stacking of up to 8 switches with 160 Gbps stack bandwidth, while flexible stacking on all interfaces and SFP+/QSFP+ accessory types, up to 8 switches. https://meraki.cisco.com/product-collateral/ms425-series-datasheet/?file Page no.5 in the above datasheet briefs about this.
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